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ES2355282T3 - ROLLER SUPPORT FOR ROLLERS GUIDE FOR A Fused METAL BATH. - Google Patents

ROLLER SUPPORT FOR ROLLERS GUIDE FOR A Fused METAL BATH. Download PDF

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Publication number
ES2355282T3
ES2355282T3 ES08015384T ES08015384T ES2355282T3 ES 2355282 T3 ES2355282 T3 ES 2355282T3 ES 08015384 T ES08015384 T ES 08015384T ES 08015384 T ES08015384 T ES 08015384T ES 2355282 T3 ES2355282 T3 ES 2355282T3
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Spain
Prior art keywords
guide rollers
inner ring
protective layer
rollers according
rotating
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Active
Application number
ES08015384T
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Spanish (es)
Inventor
Alireza Kouscheschi
Roman Lieutenant
Wilfried PLÄTZER
Daniel PLÄTZER
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Band Zink GmbH
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Band Zink GmbH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0034—Details related to elements immersed in bath
    • C23C2/00342—Moving elements, e.g. pumps or mixers
    • C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/62—Selection of substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6688—Lubricant compositions or properties, e.g. viscosity
    • F16C33/6692—Liquids other than oil, e.g. water, refrigerants, liquid metal

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Sliding-Contact Bearings (AREA)
  • Support Of The Bearing (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Soporte giratorio para rodillos guía para un baño de metal fundido (3), con un árbol (4) alojado de manera giratoria en la masa fundida de metal mediante extremos de árbol (6) en dispositivos de rodamiento (71, 72), estando alojados los extremos de árbol (6) de manera desplazable en ambos sentidos axiales en los dispositivos de rodamiento (71, 72), estando dispuestos los dispositivos de rodamiento (71, 72) en brazos giratorios (51, 52) y presentando un anillo exterior (11) fijado en el brazo giratorio (51, 52), un rodillo cilíndrico (19) como elemento de rodadura y un anillo interior (15), estando fijados los rodillos cilíndricos (19) mediante elementos de reborde (17, 18) en el anillo interior (15) en ambos sentidos axiales, caracterizado por que los extremos de árbol (6) presentan una capa protectora (9) de un material que es más resistente al desgaste que el material del extremo de árbol (6) y el anillo exterior (11) presenta elementos de reborde (13, 14), que junto con los elementos de reborde (17, 18) fijan los rodillos cilíndricos (19) en el anillo interior (15) en ambos sentidos axiales.Rotating support for guide rollers for a molten metal bath (3), with a shaft (4) rotatably housed in the metal melt by means of shaft ends (6) in bearing devices (71, 72), being housed the shaft ends (6) can be displaced in both axial directions in the bearing devices (71, 72), the bearing devices (71, 72) being arranged in rotating arms (51, 52) and having an outer ring ( 11) fixed on the rotating arm (51, 52), a cylindrical roller (19) as a rolling element and an inner ring (15), the cylindrical rollers (19) being fixed by flange elements (17, 18) in the inner ring (15) in both axial directions, characterized in that the tree ends (6) have a protective layer (9) of a material that is more resistant to wear than the tree end material (6) and the outer ring (11) presents flange elements (13, 14), which together with the s flange elements (17, 18) fix the cylindrical rollers (19) in the inner ring (15) in both axial directions.

Description

La invención se refiere a un soporte giratorio sobre rodillos guía para un baño de metal fundido, con un árbol suspendido de manera giratoria en la masa fundida de metal mediante extremos de árbol apoyados en dispositivos de rodamiento, estando dispuestos los extremos del árbol con posibilidad de desplazamiento en ambos sentidos axiales en los dispositivos de rodamiento, estando dispuestos los dispositivos de rodamiento en brazos giratorios y presentando un 5 anillo exterior fijado en el brazo giratorio, un rodillo cilíndrico como elemento de rodadura y un anillo interior, estando fijados los rodillos cilíndricos mediante elementos de reborde en el anillo interior en ambos sentidos axiales. The invention relates to a rotating support on guide rollers for a bath of molten metal, with a shaft rotatably suspended in the metal melt by means of tree ends supported by rolling devices, the ends of the tree being arranged with the possibility of displacement in both axial directions in the rolling devices, the rolling devices being arranged in rotating arms and having an outer ring fixed on the rotating arm, a cylindrical roller as a rolling element and an inner ring, the cylindrical rollers being fixed by flange elements in the inner ring in both axial directions.

Tales soportes giratorios para rodillos guía se usan en instalaciones de revestimiento para el revestimiento de una banda metálica en una masa fundida de un metal de revestimiento. A este respecto se utilizan los dispositivos de revestimiento para el revestimiento de bandas metálicas con una capa resistente a la corrosión de cinc, estaño, plomo, 10 aluminio, Galvalume o Galfan. La banda metálica se hace pasar para ello a través de una masa fundida de metal caliente a varios cientos de grados centígrados del respectivo metal de revestimiento. Para la estabilización y para la desviación están dispuestos en la masa fundida de metal árboles rotatorios como rodillos guía. El alojamiento del árbol de desviación rotatorio en el baño de metal fundido se realiza a este respecto en dispositivos de cojinete diseñados como cojinete de desgaste. A este respecto se conoce por el documento DE 102 36 113 B3 cómo configurar un 15 dispositivo de cojinete de este tipo como dispositivo de cojinete de deslizamiento. Este dispositivo de cojinete de deslizamiento presenta una retirada de desgaste y de material relativamente alta, lo que origina un cambio frecuente de piezas de cojinete, que está unido a altos costes. Such rotating supports for guide rollers are used in cladding installations for coating a metal strip in a melt of a cladding metal. In this regard, coating devices are used for coating metal strips with a corrosion resistant layer of zinc, tin, lead, aluminum, Galvalume or Galfan. The metal band is passed through a hot metal melt several hundred degrees Celsius of the respective coating metal. For the stabilization and for the deviation, rotating shafts are arranged in the metal melt as guide rollers. The housing of the rotary deflection shaft in the molten metal bath is carried out in this respect in bearing devices designed as wear bearing. In this regard, it is known from DE 102 36 113 B3 how to configure such a bearing device as a sliding bearing device. This sliding bearing device has a relatively high wear and material removal, resulting in a frequent change of bearing parts, which is linked to high costs.

El documento JP 01 159359 A describe un soporte giratorio para rodillos guía con un dispositivo de rodamiento del tipo mencionado anteriormente, pero cuyo rodamiento se puede cambiar únicamente de manera muy compleja. 20 JP 01 159359 A describes a rotating support for guide rollers with a bearing device of the type mentioned above, but whose bearing can only be changed in a very complex way. twenty

Por tanto, es objetivo de la invención proporcionar un soporte giratorio para rodillos guía que evite las desventajas mencionadas anteriormente. Therefore, it is an object of the invention to provide a rotating support for guide rollers that avoids the aforementioned disadvantages.

Este objetivo se soluciona de acuerdo con la invención con las características de la reivindicación 1. This objective is solved according to the invention with the characteristics of claim 1.

En el soporte giratorio para rodillos guía de acuerdo con la invención, los extremos de árbol presentan una capa protectora de un material que es más resistente al desgaste que el material del extremo de árbol que está alojado 25 en un dispositivo de rodamiento de manera desplazable en ambos sentidos axiales. El dispositivo de rodamiento presenta a este respecto un anillo exterior fijado en el brazo giratorio, rodillos cilíndricos como elementos de rodadura y un anillo interior. Los rodillos cilíndricos están fijados mediante elementos de reborde en el anillo interior y exterior en ambos sentidos axiales. In the rotating support for guide rollers according to the invention, the shaft ends have a protective layer of a material that is more resistant to wear than the material of the shaft end that is housed in a rolling device in a displaceable manner in Both axial senses. The bearing device has in this respect an outer ring fixed on the rotating arm, cylindrical rollers as rolling elements and an inner ring. The cylindrical rollers are fixed by flange elements in the inner and outer ring in both axial directions.

Un dispositivo de cojinete configurado de esta manera garantiza una estabilidad de giro particularmente alta 30 con desgaste reducido. La retirada de piezas desgastadas es posible en este caso de manera particularmente fácil y, con ello, económica. A bearing device configured in this way guarantees a particularly high rotation stability 30 with reduced wear. The removal of worn parts is possible in this case particularly easily and, thereby, economically.

Para poder garantizar una compensación de un movimiento axial en caso de desalineación angular simultánea de los extremos de árbol del árbol de desviación se realiza la superficie del anillo interior orientada hacia la capa protectora de manera convexa en la sección longitudinal. Mediante un contacto esencialmente puntual y la capacidad de 35 giro del anillo interior puede conseguirse una acción similar al efecto de deslizamiento de un cojinete de deslizamiento, teniendo en cuenta naturalmente también las ventajas de un rodamiento. In order to ensure compensation of an axial movement in case of simultaneous angular misalignment of the tree ends of the deflection shaft, the surface of the inner ring is oriented towards the protective layer convexly in the longitudinal section. Through an essentially punctual contact and the turning capacity of the inner ring, an action similar to the sliding effect of a sliding bearing can be achieved, naturally also taking into account the advantages of a bearing.

Debido a que el anillo interior, los rodillos cilíndricos y/o el anillo exterior están compuestos de un material cerámico, se obtiene una resistencia al desgaste particularmente alta del soporte giratorio para rodillos guía. Because the inner ring, the cylindrical rollers and / or the outer ring are composed of a ceramic material, a particularly high wear resistance of the rotating support for guide rollers is obtained.

Ha resultado particularmente ventajoso que la capa protectora sea una aleación dura a base de cobalto-cromo. 40 A este respecto, la capa protectora puede ser un revestimiento o, sin embargo, también puede configurarse de manera ventajosa como un casquillo dispuesto de manera resistente al giro. Este casquillo puede sujetarse entonces mediante un elemento de inmovilización en el extremo del árbol. It has been particularly advantageous for the protective layer to be a hard alloy based on cobalt-chromium. 40 In this respect, the protective layer may be a lining or, however, it may also be advantageously configured as a bushing arranged in a rotatable manner. This bushing can then be held by an immobilization element at the end of the tree.

Como cojinete axial puede estar presente en sentido axial una arandela de tope compuesta de material cerámico opuesta al extremo del árbol. 45 As an axial bearing, a stop washer composed of ceramic material opposite the end of the shaft can be present axially. Four. Five

También ha resultado ventajoso que un elemento de reborde esté configurado como elemento de reborde suelto, estando presente como anillo de seguridad en el anillo exterior. De esta manera se simplifica esencialmente un cambio de piezas desgastadas. It has also been advantageous for a flange element to be configured as a loose flange element, being present as a safety ring in the outer ring. This essentially simplifies a change of worn parts.

A continuación, con referencia a los dibujos se explica con más detalle un ejemplo de realización de la invención. Se muestra: 50 Next, with reference to the drawings, an embodiment of the invention is explained in more detail. Shown: 50

en la figura 1, un dispositivo de revestimiento con un soporte giratorio para rodillos guía de acuerdo con la invención en un baño de metal fundido en vista lateral y in figure 1, a coating device with a rotating support for guide rollers according to the invention in a molten metal bath in side view and

en la figura 2, una sección longitudinal del dispositivo de cojinete de la figura 1. in figure 2, a longitudinal section of the bearing device of figure 1.

En la figura 1 se representa de manera simplificada en una vista lateral un dispositivo de revestimiento 1 para el revestimiento de una banda metálica 2 en un baño de metal fundido 3. La banda metálica 2 se conduce por el baño de metal fundido 3, para dotar a la superficie de la banda metálica 2 de un revestimiento metálico delgado. In figure 1 a coating device 1 for coating a metal band 2 in a molten metal bath 3 is shown in a simplified view. The metal band 2 is driven by the molten metal bath 3, to provide to the surface of the metal band 2 of a thin metal coating.

La banda metálica 2 se introduce en el baño de metal fundido 3 y allí mediante un rodillo guía configurado 5 como árbol de desviación 4 giratorio se extrae de nuevo verticalmente hacia arriba del baño de metal fundido 3. La fuerza de tracción de la banda metálica 2 asciende a este respecto a entre 0,8 y 6,5 t. El baño de metal fundido 3 está compuesto de cinc, estaño, plomo, aluminio, Galvalume, Galfan líquido o de otro metal adecuado para el revestimiento metálico. Según la elección del metal fundido, el baño de metal fundido 2 tiene una temperatura de 400ºC a 700ºC. A este respecto, el procedimiento de revestimiento se realiza a velocidades de banda de hasta 250 m/min. 10 The metal band 2 is introduced into the molten metal bath 3 and there by means of a guide roller configured 5 as a rotating deflection shaft 4, it is again extracted vertically upwards from the molten metal bath 3. The tensile force of the metal band 2 in this respect it amounts to between 0.8 and 6.5 t. The molten metal bath 3 is composed of zinc, tin, lead, aluminum, Galvalume, liquid Galfan or another metal suitable for metal cladding. Depending on the choice of molten metal, the molten metal bath 2 has a temperature of 400 ° C to 700 ° C. In this regard, the coating process is performed at band speeds of up to 250 m / min. 10

El árbol de desviación 6 se sujeta mediante dos brazos giratorios 51, 52 en el baño de metal fundido 3. El árbol de desviación 6 puede sacarse del baño de metal fundido 3 para fines de mantenimiento y reparación. The deflection shaft 6 is held by two rotating arms 51, 52 in the molten metal bath 3. The deflection shaft 6 can be removed from the molten metal bath 3 for maintenance and repair purposes.

En ambos extremos sumergidos de los brazos giratorios 51, 52 se prevé respectivamente un dispositivo de rodamiento 71, 72, en los que están alojados con posibilidad de giro los respectivos extremos de árbol 6 del árbol de desviación 4. 15 At both submerged ends of the rotating arms 51, 52 a bearing device 71, 72 is respectively provided, in which the respective shaft ends 6 of the deflection shaft 4 are housed.

La estructura de los dos dispositivos de rodamiento 71, 72 se representa con detalle en la figura 2. En el extremo de árbol 6 está retenido de manera resistente al giro un casquillo 9 mediante un elemento de inmovilización 8. Este casquillo 9 sirve en el presente caso como capa protectora para el extremo de árbol 6, para proteger el mismo contra desgaste abrasivo debido a la interacción con el dispositivo de rodamiento 72. Para ello, el casquillo 9 en el presente ejemplo de realización está compuesto de una aleación dura a base de cobalto-cromo. 20 The structure of the two bearing devices 71, 72 is shown in detail in Fig. 2. At the shaft end 6 a bushing 9 is retained in a rotatable manner by means of an immobilization element 8. This bushing 9 is presently used case as a protective layer for the shaft end 6, to protect it against abrasive wear due to the interaction with the bearing device 72. For this, the bushing 9 in the present embodiment is composed of a hard alloy based on cobalt-chromium. twenty

El extremo de árbol 6 dotado de esta manera del casquillo 9 está alojado de manera desplazable en ambos sentidos axiales en el dispositivo de rodamiento 72. Para ello se proporciona en el brazo giratorio 52 un casquillo de brazo giratorio 10 de dos piezas, en el que están fijados un anillo exterior 11 y el anillo de seguridad 12 correspondiente mediante ajuste prensado. El anillo exterior 11 presenta un primer elemento de reborde 13 y el anillo de seguridad 12 forma el segundo elemento de reborde 14 como elemento de reborde suelto. Además, el dispositivo de rodamiento 72 25 presenta un anillo interior 15, que posibilita la capacidad de desplazamiento del extremo de árbol en ambos sentidos axiales. Para posibilitar también una desalineación angular del extremo de árbol 6, la superficie 16 del anillo interior 15 orientada hacia el casquillo 9 está realizada de manera convexa en sentido longitudinal. De esta manera puede existir un contacto puntual entre el casquillo 9 y el anillo interior 15. El anillo interior 15 también presenta en la superficie orientada hacia el anillo exterior 11 dos elementos de reborde 17 y 18. De manera correspondiente, los rodillos 30 cilíndricos 19 están dispuestos entre el anillo interior 15 y el anillo exterior 11 de manera fija mediante los elementos de reborde 13, 14, 17 y 18 en ambos sentido axiales. The shaft end 6 thus provided with the bushing 9 is movable in both axial directions in the bearing device 72. To this end, a two-piece swivel arm bushing 10 is provided on the rotating arm 52, in which an outer ring 11 and the corresponding safety ring 12 are fixed by pressing adjustment. The outer ring 11 has a first flange element 13 and the safety ring 12 forms the second flange element 14 as a loose flange element. In addition, the bearing device 72 25 has an inner ring 15, which makes it possible to move the shaft end in both axial directions. To also enable angular misalignment of the shaft end 6, the surface 16 of the inner ring 15 facing the bushing 9 is convexed longitudinally. In this way there can be a point contact between the bushing 9 and the inner ring 15. The inner ring 15 also has on the surface facing the outer ring 11 two flange elements 17 and 18. Correspondingly, the cylindrical rollers 30 they are arranged between the inner ring 15 and the outer ring 11 in a fixed manner by means of the flange elements 13, 14, 17 and 18 in both axial directions.

En el presente ejemplo de realización, todas las piezas del dispositivo de rodamiento 72, es decir, el anillo exterior 11, el anillo de seguridad 12, el anillo interior 15 y los rodillos cilíndricos 19, están fabricados de material cerámico. 35 In the present exemplary embodiment, all the parts of the bearing device 72, that is, the outer ring 11, the safety ring 12, the inner ring 15 and the cylindrical rollers 19, are made of ceramic material. 35

En sentido axial se proporciona una arandela de tope 20 fabricada de material cerámico opuesta al extremo de árbol 6, que sirve como cojinete axial. La arandela de tope 20 está unida mediante un elemento de fijación 21 de manera no representada con el brazo giratorio 52. In axial direction there is provided a stop washer 20 made of ceramic material opposite the shaft end 6, which serves as an axial bearing. The stop washer 20 is connected by a fastener 21 in a manner not shown with the rotating arm 52.

Para el cambio de piezas de rodamiento desgastadas o del casquillo 9, los brazos giratorios 51, 52 de los dispositivos de rodamiento 71, 72 giran con el árbol de desviación 4 al exterior del baño de metal fundido 3. Tras el 40 enfriamiento de los dispositivos de rodamiento 71, 72, el casquillo de brazo giratorio 10 de dos piezas puede soltarse y las piezas correspondientes pueden cambiarse y remplazarse. For the replacement of worn bearing parts or of the bushing 9, the rotating arms 51, 52 of the bearing devices 71, 72 rotate with the deflection shaft 4 outside the molten metal bath 3. After the cooling of the devices of bearing 71, 72, the two-piece swivel arm bushing 10 can be released and the corresponding parts can be changed and replaced.

Claims (10)

REIVINDICACIONES 1. Soporte giratorio para rodillos guía para un baño de metal fundido (3), con un árbol (4) alojado de manera giratoria en la masa fundida de metal mediante extremos de árbol (6) en dispositivos de rodamiento (71, 72), estando alojados los extremos de árbol (6) de manera desplazable en ambos sentidos axiales en los dispositivos de rodamiento (71, 72), estando dispuestos los dispositivos de rodamiento (71, 72) en brazos giratorios (51, 52) y presentando un anillo 5 exterior (11) fijado en el brazo giratorio (51, 52), un rodillo cilíndrico (19) como elemento de rodadura y un anillo interior (15), estando fijados los rodillos cilíndricos (19) mediante elementos de reborde (17, 18) en el anillo interior (15) en ambos sentidos axiales, caracterizado por que los extremos de árbol (6) presentan una capa protectora (9) de un material que es más resistente al desgaste que el material del extremo de árbol (6) y el anillo exterior (11) presenta elementos de reborde (13, 14), que junto con los elementos de reborde (17, 18) fijan los rodillos cilíndricos (19) en el 10 anillo interior (15) en ambos sentidos axiales. 1. Swivel support for guide rollers for a molten metal bath (3), with a shaft (4) rotatably housed in the metal melt by means of shaft ends (6) on rolling devices (71, 72), the shaft ends (6) being movable in both axial directions in the bearing devices (71, 72), the bearing devices (71, 72) being arranged in rotating arms (51, 52) and having a ring 5 (11) fixed on the rotating arm (51, 52), a cylindrical roller (19) as a rolling element and an inner ring (15), the cylindrical rollers (19) being fixed by flange elements (17, 18 ) in the inner ring (15) in both axial directions, characterized in that the tree ends (6) have a protective layer (9) of a material that is more resistant to wear than the tree end material (6) and the outer ring (11) has flange elements (13, 14), which together c on the flange elements (17, 18) fix the cylindrical rollers (19) in the inner ring (15) in both axial directions. 2. Soporte giratorio para rodillos guía de acuerdo con la reivindicación 1, caracterizado por que la superficie (16) del anillo interior (15) orientada hacia la capa protectora (9) está realizada de manera convexa en la sección longitudinal. 2. Rotating support for guide rollers according to claim 1, characterized in that the surface (16) of the inner ring (15) oriented towards the protective layer (9) is convexly conveyed in the longitudinal section. 3. Soporte giratorio para rodillos guía de acuerdo con la reivindicación 1 ó 2, caracterizado por que el anillo interior (15), los rodillos cilíndricos (19) y/o el anillo exterior (11) están compuestos de un material cerámico. 15 3. Rotating support for guide rollers according to claim 1 or 2, characterized in that the inner ring (15), the cylindrical rollers (19) and / or the outer ring (11) are composed of a ceramic material. fifteen 4. Soporte giratorio para rodillos guía de acuerdo con una de las reivindicaciones 1 - 3, caracterizado por que la capa protectora (9) es una aleación dura a base de cobalto-cromo. 4. Rotating support for guide rollers according to one of claims 1 - 3, characterized in that the protective layer (9) is a hard alloy based on cobalt-chromium. 5. Soporte giratorio para rodillos guía de acuerdo con una de las reivindicaciones 1 - 4, caracterizado por que la capa protectora (9) es un revestimiento. 5. Rotating support for guide rollers according to one of claims 1-4, characterized in that the protective layer (9) is a coating. 6. Soporte giratorio para rodillos guía de acuerdo con una de las reivindicaciones 1 - 4, caracterizado por que la 20 capa protectora (9) es un casquillo dispuesto de manera resistente al giro. 6. Rotating support for guide rollers according to one of claims 1-4, characterized in that the protective layer (9) is a bushing arranged in a rotatable manner. 7. Soporte giratorio para rodillos guía de acuerdo con la reivindicación 6, caracterizado por que el casquillo (9) está sujeto mediante un elemento de inmovilización (8) en el extremo de árbol (6). 7. Swivel support for guide rollers according to claim 6, characterized in that the bushing (9) is secured by an immobilization element (8) at the shaft end (6). 8. Soporte giratorio para rodillos guía de acuerdo con una de las reivindicaciones anteriores, caracterizado por que en sentido axial, en posición opuesta al extremo de árbol (6) está dispuesta una arandela de tope (20) compuesta 25 de material cerámico. 8. Swivel support for guide rollers according to one of the preceding claims, characterized in that in an axial direction, opposite the shaft end (6) there is provided a stop washer (20) composed of ceramic material. 9. Soporte giratorio para rodillos guía de acuerdo con una de las reivindicaciones anteriores, caracterizado por que un elemento de reborde (14) está configurado como elemento de reborde suelto, estando presente como anillo de seguridad (12) en el anillo exterior (11). 9. Swivel support for guide rollers according to one of the preceding claims, characterized in that a flange element (14) is configured as a loose flange element, being present as a safety ring (12) in the outer ring (11) . 10. Soporte giratorio para rodillos guía de acuerdo con una de las reivindicaciones anteriores, caracterizado por 30 que existe tal separación entre el anillo interior (15) y la capa protectora (9), que está garantizada la capacidad de desplazamiento del extremo de árbol en ambos sentidos axiales. 10. Rotating support for guide rollers according to one of the preceding claims, characterized in that there is such a separation between the inner ring (15) and the protective layer (9), that the displacement capacity of the shaft end is guaranteed in Both axial senses.
ES08015384T 2008-09-01 2008-09-01 ROLLER SUPPORT FOR ROLLERS GUIDE FOR A Fused METAL BATH. Active ES2355282T3 (en)

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US8500336B2 (en) 2013-08-06
EP2159297A1 (en) 2010-03-03
DE502008001907D1 (en) 2011-01-05
EP2159297B1 (en) 2010-11-24
BRPI0917386A2 (en) 2015-11-17
KR101245504B1 (en) 2013-03-25
BRPI0917386B1 (en) 2020-02-04
JP5595399B2 (en) 2014-09-24
ATE489487T1 (en) 2010-12-15
KR20110036839A (en) 2011-04-11
US20110150382A1 (en) 2011-06-23
JP2012501382A (en) 2012-01-19

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